staging and grading

Question 1

Stage 1

Answer 1

*1-2mm
*RBL <15% coronal 3rd
*no tooth loss
*max depth <4mm
*mostly horizontal bone loss

Question 2

Stage 2

Answer 2

*3-4mm
*RBL 15-33%
*no tooth loss
*max depth <5mm
*mostly horizontal bone loss

Question 3

Stage 3

Answer 3

*>5mm
*extending to middle 1/3 of root and beyond
*<4 teeth lost
*>6mm probing depth
*vertical bone loss
*furcation involvement
*moderate ridge defects

Question 3

Stage 4

Answer 3

*>5mm
*extending to middle 1/3 of root and beyond
*>5 teeth lost
*need complex rehab

Question 4

Grade A

Answer 4

*no bone loss over 5 yrs
*<0.25 bone loss/age
*heavy biofilm deposits with low levels of destruction
*non-smoker
*no diagnosis of diabetes

Question 5

Grade B

Answer 5

*<2mm over 5 years
*0.25-1.0 bone loss/age
*destruction commensurate with biofilm deposits
*<10 cigarettes/day
* HbA1c <7.0% in patients with diabetes

Question 6

Grade C

Answer 6

*>2mm over 5 years
*>1.0 bone loss/age
*destruction exceeds expectations given biofilm deposits; suggestion of rapid progression or early onset of disease
*>10 cigarettes/ day
*HbA1c >7.0% in diabetics